Vice has posted a treasure trove of photos and interviews from The Cave Clan, Melbourne's legendary group of storm drain loving urban explorers (complete with a secret headquarters, The Chamber).
Our aim is to examine [Paris's] connection to its underground in a way no one has before: we will attempt to walk from the southern edge to the northern, using only catacombs, telecom tunnels, sewers and other hidden infrastructure. It is a 14-mile trek, every step illegal.
Paris Catacombs. National Geographic's Neil Shea goes underground in Paris. Photography by Stephen Alvarez.